The Y-SNP branch E1b1a-U174 is defined by P252, U174. (Source: [https://yhrd.org/tools/branch/E1b1a-U174])
E-U174 is a branch of the paternal tree of humankind. It and its branches help trace human history from our origin in Africa. Age: About 5,900 years ago. Parent Branch: E-M191. (Source: [https://haplogroup.org/ystory/e-u174/]).
E1b1a1a1f1a1 (YCC E1b1a7a) is defined by P252/U174. It appears to be the most common subclade of E-L485 and believed to have originated near western Central Africa. Studies show that It is rarely found in most western portions of West Africa, however, this subclade is very prevalent in Nigeria and Gabon and found in some Yoruba people. (Source: [https://en.wikipedia.org/wiki/Haplogroup_E-M2].)